Sanitary napkin



FIG. 1 is a top view of a sanitary napkin showing our new design;

FIG. 2 is a bottom view of the sanitary napkin as shown in FIG. 1;

FIG. 3 is a left side view of the sanitary napkin as shown in FIG. 1, the right side view being a mirror image thereof; and,

FIG. 4 is a front side view of the sanitary napkin as shown in FIG. 1, the back side view being a mirror image thereof.

The broken lines shown are for purposes of illustrating portions of the sanitary napkin that form no part of the claimed design. 

The ornamental design for a sanitary napkin, as shown and described. 